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Mean

Given that th...

Question

Given that the mean of 50 observations was 35 and it was found later that an observation 48 was wrongly taken as 23. The corrected new mean is

A

35

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B

35.5

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C

36

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D

None of these

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Solution

The correct option is B
35.5

Therefore, correct sum = (35 $\times$ 50 + 48 - 23) = 1775.

Therefore, correct mean = 1775/50 = 35.5

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